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LogProgress
Author: unefesseeetaulitdev
Description Source Code Launch App Current Users
// This app is basically the standard tip goal with a progress bar,
// courtesy of chelsea2950 (Dorothy's Tip Goals author).
// Instead of increasing linearly with tips, the progress bar increases
// logarithmically, giving more weight to early donnations and less to
// late donnations.  
// This is done to try to incentivize donnations for big goals, and avoid
// discouraging early donnors
//
// The intended use case is for couple who just want to stream their regular
// lovemaking sessions without having to set intermediary goals that would
// interrupt their natural flow while still trying to maximize tips.

// vars
var total_tipped = 0;
var last_tip_username = null;
var last_tip_amount = 0;
var subject_is_set_with_0 = false;

cb.settings_choices = [
    {name: 'tokens', type: 'int', minValue: 1, default: 100},
    {name: 'goal_description', type: 'str', minLength: 1, maxLength: 255}
];

// handlers
cb.onTip(function(tip) {
    total_tipped += tip['amount']
    update_subject();
    last_tip_amount = tip['amount']
    last_tip_username = tip['from_user']
    cb.drawPanel();
});


cb.onDrawPanel(function(user) {
    var remaining_label, remaining;
    if (total_tipped < cb.settings.tokens) {
        remaining_label = "Remaining Goal :"
        remaining = cb.settings.tokens - total_tipped;
    } else {
        remaining_label = "Tips over Goal :";
        remaining = total_tipped - cb.settings.tokens + ", Thank you <3";
    }
    return {
        'template': '3_rows_of_labels',
        'row1_label': remaining_label,
        'row1_value': remaining,
        'row2_label': 'Progress:',
        'row2_value': goalBar(total_tipped, cb.settings.tokens),
        'row3_label': 'Latest Tip Received:',
        'row3_value': format_username(last_tip_username) + ' (' + last_tip_amount + ')'
    };
});


function get_log(x) {
    // take 25 * log_10(x + 1)**2 for a smooth log function that starts at 0 and
    // meets 100 at 100.
    // since js only handles ln, we convert the base and it gives
    // 4.715292425290347 * ln(x + 1)**2
    // We use the |0 shortcut to convert to int
    return 4.715292425290347 * Math.log(x + 1) * Math.log(x + 1)|0;
}

function charRepeat(char, amount) {
    var string = "";
    for (var i = 0; i < amount; i += 1) {
        string += char;
    }
    return string;
}

function goalBar(current,total) {
    var percent = Math.min(100 * (current / total), 100);
    var log_percent = get_log(percent);
    bar = '';
    full = '\u25C6';
    half = '\u25C8';
    empty = '\u25C7';
    drawn = 0;
    var empty_amount = (log_percent / 10)|0;
    bar += charRepeat(full, empty_amount);
    if (log_percent % 10 >= 5) {
        bar += half + charRepeat(empty, 9 - empty_amount)
    } else {
        bar += charRepeat(empty, 10 - empty_amount)
    }
    return bar;
}

// helper functions
function update_subject() {
    var remaining = cb.settings.tokens - total_tipped;
    if (remaining <= 0) {
        if (subject_is_set_with_0) {
            return;
        }
        subject_is_set_with_0 = true;
        cb.changeRoomSubject(
            cb.settings.goal_description + " [Goal reached!]"
        );
    } else {
        cb.changeRoomSubject(
            cb.settings.goal_description + " [" + remaining + " tokens remaining]"
        );
    }
}

function format_username(val) {
    if (val === null) {
        return "--";
    } else {
        return val.substring(0, 12);
    }
}

function init() {
    update_subject();
}

init();